Changeset 60684 for trunk/tests/phpunit/tests/block-bindings/wp-block-get-block-bindings-processor.php

Block Bindings: Allow generically setting rich-text block attributes.

Replace the existing block-specific, hard-coded, logic in the WP_Block class with more generic code that is able to locate and replace a rich-text sourced attribute based on the selector definition in its block.json.

This should make it easier to add block bindings support for more block attributes.

Props bernhard-reiter, jonsurrell, gziolo, cbravobernal, dmsnell.
Fixes #63840.